ENVIRONMENTALLY FRIENDLY TEMPORARY ANTI-MOULD TREATMENT OF PACKAGING MATERIAL BEFORE DRYING

According to FAO - ISPM No 15, in international trade wood packaging material on the basis of sawn timber requires to be heat-treated to avoid spreading of harmful organisms. "Heat-treatment" means a minimum core temperature of the wood of 56° C for a minimum of 30 minutes. ISPM No 15 does...

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Autores principales:	Welling,Johannes, Lambertz,Gerda
Lenguaje:	English
Publicado:	Universidad del Bío-Bío 2008
Materias:	Anti-mould treatment temporary protection Pinus sylvestris ISPM 15 heat treatment blue stain packaging material
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-221X2008000100003
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spelling	oai:scielo:S0718-221X20080001000032008-05-20ENVIRONMENTALLY FRIENDLY TEMPORARY ANTI-MOULD TREATMENT OF PACKAGING MATERIAL BEFORE DRYINGWelling,JohannesLambertz,Gerda Anti-mould treatment temporary protection Pinus sylvestris ISPM 15 heat treatment blue stain packaging material According to FAO - ISPM No 15, in international trade wood packaging material on the basis of sawn timber requires to be heat-treated to avoid spreading of harmful organisms. "Heat-treatment" means a minimum core temperature of the wood of 56° C for a minimum of 30 minutes. ISPM No 15 does not define moisture content and therefore does not include rules for the drying process. Practitioners report that fresh sapwood, after having undergone a pure heat treatment without any kind of drying, shows a great affinity to fungi (mould and blue stain). Even though the infestation does not affect the strength properties of the wood, it must be considered as an optical and a sanitary problem. An environmentally friendly, cheap and easy to use technique for temporary anti-mould protection of heat-treated wood is needed to bridge the time span between sawing, heat treatment and air or kiln drying. Results derived from laboratory experiments have shown that the heat-treatment affects the elution of the lipid components within pine sapwood. While searching for alternatives to conventional preservation methods, different environmentally compliant agents (particularly aqueous solutions containing sodium- and potassium carbonate) were found to inhibit the germination of mould and blue stain fungi spores on wood packaging material surfaces in a temporary manner. Besides their effectiveness, the usage of these agents to achieving the temporary protection (e.g. for a couple of weeks) is economically feasible and easily applicable in industrial practice. However, drying (either naturally or technically) is indispensable to avoid fungal hazard on the long run. A combination of temporary treatment immediately after sawing followed by a drying-process (long lasting protection) seems to be the most effective method to protect ISPM No 15 treated wood packaging material against mouldinfo:eu-repo/semantics/openAccessUniversidad del Bío-BíoMaderas. Ciencia y tecnología v.10 n.1 20082008-01-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-221X2008000100003en10.4067/S0718-221X2008000100003
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Anti-mould treatment temporary protection Pinus sylvestris ISPM 15 heat treatment blue stain packaging material
spellingShingle	Anti-mould treatment temporary protection Pinus sylvestris ISPM 15 heat treatment blue stain packaging material Welling,Johannes Lambertz,Gerda ENVIRONMENTALLY FRIENDLY TEMPORARY ANTI-MOULD TREATMENT OF PACKAGING MATERIAL BEFORE DRYING
description	According to FAO - ISPM No 15, in international trade wood packaging material on the basis of sawn timber requires to be heat-treated to avoid spreading of harmful organisms. "Heat-treatment" means a minimum core temperature of the wood of 56° C for a minimum of 30 minutes. ISPM No 15 does not define moisture content and therefore does not include rules for the drying process. Practitioners report that fresh sapwood, after having undergone a pure heat treatment without any kind of drying, shows a great affinity to fungi (mould and blue stain). Even though the infestation does not affect the strength properties of the wood, it must be considered as an optical and a sanitary problem. An environmentally friendly, cheap and easy to use technique for temporary anti-mould protection of heat-treated wood is needed to bridge the time span between sawing, heat treatment and air or kiln drying. Results derived from laboratory experiments have shown that the heat-treatment affects the elution of the lipid components within pine sapwood. While searching for alternatives to conventional preservation methods, different environmentally compliant agents (particularly aqueous solutions containing sodium- and potassium carbonate) were found to inhibit the germination of mould and blue stain fungi spores on wood packaging material surfaces in a temporary manner. Besides their effectiveness, the usage of these agents to achieving the temporary protection (e.g. for a couple of weeks) is economically feasible and easily applicable in industrial practice. However, drying (either naturally or technically) is indispensable to avoid fungal hazard on the long run. A combination of temporary treatment immediately after sawing followed by a drying-process (long lasting protection) seems to be the most effective method to protect ISPM No 15 treated wood packaging material against mould
author	Welling,Johannes Lambertz,Gerda
author_facet	Welling,Johannes Lambertz,Gerda
author_sort	Welling,Johannes
title	ENVIRONMENTALLY FRIENDLY TEMPORARY ANTI-MOULD TREATMENT OF PACKAGING MATERIAL BEFORE DRYING
title_short	ENVIRONMENTALLY FRIENDLY TEMPORARY ANTI-MOULD TREATMENT OF PACKAGING MATERIAL BEFORE DRYING
title_full	ENVIRONMENTALLY FRIENDLY TEMPORARY ANTI-MOULD TREATMENT OF PACKAGING MATERIAL BEFORE DRYING
title_fullStr	ENVIRONMENTALLY FRIENDLY TEMPORARY ANTI-MOULD TREATMENT OF PACKAGING MATERIAL BEFORE DRYING
title_full_unstemmed	ENVIRONMENTALLY FRIENDLY TEMPORARY ANTI-MOULD TREATMENT OF PACKAGING MATERIAL BEFORE DRYING
title_sort	environmentally friendly temporary anti-mould treatment of packaging material before drying
publisher	Universidad del Bío-Bío
publishDate	2008
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-221X2008000100003
work_keys_str_mv	AT wellingjohannes environmentallyfriendlytemporaryantimouldtreatmentofpackagingmaterialbeforedrying AT lambertzgerda environmentallyfriendlytemporaryantimouldtreatmentofpackagingmaterialbeforedrying
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ENVIRONMENTALLY FRIENDLY TEMPORARY ANTI-MOULD TREATMENT OF PACKAGING MATERIAL BEFORE DRYING

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